Double-Coated Breeds in Summer

Short answer, before anything else: leave the coat on. The reason has to do with what the undercoat is actually doing, and it is not what most people assume.

Who this is for

Dogs carrying a dense soft layer beneath a longer, coarser outer coat. Huskies and the other northern breeds are the ones people ask about, but the same structure turns up in herding dogs, farm dogs, and a great many mixed-breed dogs who inherited the coat without the look.

Part the coat with your fingers. If you find a compressible layer against the skin with harsher hair standing through it, this applies to your dog whatever the paperwork says — most of all to adults and older dogs, whose tolerance for heat narrows as they age.

The short answer, and the reason behind it

A double coat is a structure with parts doing different jobs.

Against the skin sits a dense, soft layer whose whole purpose is to hold still air. Above it, longer and coarser guard hairs shed water, carry dirt away from the skin, and block sunlight before it lands.

Still air is insulation, and insulation has no direction. It slows heat moving out of the dog, and it slows heat moving in just as well. Removing it does not open a vent. It removes the barrier between a hot day and the dog’s skin.

The other part of the assumption is about how dogs cool. They do not dump heat through the skin the way we do; the main route runs through the airway, with a limited contribution elsewhere. Taking the coat off therefore gives a dog no new way to lose heat. It takes away shade they were wearing and exposes skin that has never had to deal with sun.

There is a true complaint buried in all of this: a coat stuffed with dead undercoat really does trap heat. That is a maintenance problem, and it has a different solution.

What a clipped double coat usually does next

The layers do not grow back at the same rate.

The undercoat returns faster and pushes up through the guard coat instead of sitting beneath it. What you get is a coat with a different texture — woollier, softer, keener to hold debris, quicker to mat close to the skin, and less willing to shed out in its old pattern. Guard hairs may come back sparse, or patchy over the areas that were taken closest, or a different shade than before.

Some dogs recover completely. Some never look the same again. You cannot tell in advance which dog you have, and that is the real argument. Not tradition — the fact that the outcome stops being yours to choose the moment the clippers have been through.

This is separate from a clip done for a reason: a mat situation that has gone past the point where combing is kind, a procedure, a skin problem a vet is already looking at. Those decisions get made by someone with the dog in front of them, for a stated reason. A summer haircut is not that.

What actually helps: open the coat, do not remove it

A double coat works when it is loose, because air has to be able to move inside it. When shed undercoat stays trapped in place, the coat stops being an airy layer and becomes a packed one. The loft is gone, and a packed layer held against the skin behaves more like a blanket than like insulation.

Most of the relief people are hoping to get from clipping is available from getting that dead layer out instead. The coat drops noticeably in bulk, the skin gets air again, and the guard hairs carry on doing their job.

Doing that properly means using a tool that reaches the undercoat rather than the surface, which is a subject of its own: Matching the Brush to the Coat. The short version is that surface brushing polishes, while a rake or slicker followed by a comb removes, and you will feel the difference in your hand as resistance that changes rather than resistance that stays even.

A wash with a genuine dry-out afterwards releases a great deal of packed undercoat, and is often the fastest route back to a usable coat — provided it actually gets dry down at the skin. A double coat left damp underneath is worse than the packed coat you started with.

You will know the coat is open when your fingers reach skin without effort, and the coat closes back over itself when you let go instead of staying flattened where you pushed it.

Set up the space, then judge it by the dog

Shade moves. The shaded spot you left them in is sunlit later, and a dog who cannot follow the shade is a dog in the sun.

Surfaces matter more than air. Dogs offload heat by lying on something cooler than they are, which is why a dog in a warm house abandons a comfortable bed for bare tile. Give them hard cool floor indoors and shaded earth or concrete outside, and do not be offended when they pick it over the soft option.

Moving air across the dog does more than a cooler room does.

Water should be where the dog is, not only where the bowl has always lived. For big dogs that becomes a placement question rather than a bowl question: Water Stations for Large Dogs.

Check the ground with the back of your hand before you walk. Feet meet the surface, not the air, and a surface holds heat long after the air has started to drop. Push walks toward the cooler ends of the day.

Then take the decision off the dog. A dog who normally leads will keep leading well past the point where they should have stopped, and enthusiasm is not a measure of how they are coping.

Reading the dog

Watch the shape of the pant rather than the fact of it. Easy, rhythmic panting with a loose jaw is a dog working. A wide, flat, hard pant with the tongue spread and the corners of the mouth drawn back is a dog struggling.

Watch posture. Sprawled flat on the coolest surface available, deliberately off the bed, legs stretched out rather than tucked — that is a dog managing heat the room is not managing for them.

Watch the walk. A dog who leads and then drops behind, who stops in shade and does not start again on their own, or who simply sits down, has run out of margin.

Watch recovery most of all, because recovery is what separates effort from trouble. Every dog pants after exertion. The question is whether stopping changes anything: once they have been still, in shade, with water available, does the pant soften and slow? A pant that looks the same after rest as it did during work is the signal worth acting on.

And watch for the opt-out. A dog who stops asking to go out, or who turns for home early on a route they love, has made an assessment. Believe them.

When to talk to a vet

Suspected heat trouble is not a wait-and-see and not a reading situation. It is a call to your vet or the nearest emergency clinic, made at the time, ahead of anything else.

Past that, the criteria are about change that persists once the obvious explanation has been removed. Panting that does not settle after the dog has stopped, cooled off in shade and had water available is a change with no remaining explanation attached to it. A dog whose tolerance for heat is visibly different from previous summers, with nothing else in their life altered, is describing something about themselves rather than about the weather.

A coat that stops shedding out on its familiar pattern, or thins in places, while grooming and routine have stayed the same, belongs in the same category. So does skin showing through the coat, or skin in a patch that looks unlike the skin elsewhere on the same dog.

If a clip has been recommended to you, ask what it is for and what to watch for afterwards. Advice with a reason attached is a different thing from advice that arrives with the weather.

Re:HEY provides general daily-care information only. It is not veterinary diagnosis, treatment, or emergency advice. If your animal shows signs of illness, pain, or distress, contact a licensed veterinarian.

Last updated: 2026-09-22